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Observer james_chan
Observer
4,811 Views
Registered: ‎11-10-2008

Problems with System Generator!!!!

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Hi,
we created a OFDM model in Simulink and It was right when we did the simulation . However ,when the model was complied to HDL Netlist ,we discovered (in ISE Sources window) that some instances were lost,those instances are as follows:
?inst - C_COUNTER_BINARY_V7_0
?inst - BLKMEMSP_V6_1
?inst - C_DIST_MEM_V7_1
?inst - C_DDS_V4_1
?inst - C_SHIFT_RAM_V7_0
?inst - BLKMEMDP_V6_1
and there are also some clock problems  listed as follow:
in xlclockdriver_1:
?clr_reg - synth_reg_w_init
?ce_reg - synth_reg_w_init
in xlclockdriver_5:
?clr_reg - synth_reg_w_init
?ce_reg - synth_reg_w_init

Version is ISE 9.2,SystemGenerator 9.2,and Matlab 2007a.

we checked those instances in the simulink model ,but can't find them,I think it may have something to do with my software, but we can't solve the problem!!!please help!!!

Regards
james chan
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1 Solution

Accepted Solutions
Contributor
Contributor
5,079 Views
Registered: ‎09-04-2008

Re: Problems with System Generator!!!!

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Hi,

 

Your OFDM  model uses an IP core or you have built  your model from scratch?

 

i have implemented a simplified OFDM model ( as per the 802.16d standard) with channel coding, and i have not faced such problem !.

 

Can you post   the schematic of your design ? so i can take a look at  your design.

 

Regards,

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3 Replies
Contributor
Contributor
5,080 Views
Registered: ‎09-04-2008

Re: Problems with System Generator!!!!

Jump to solution

Hi,

 

Your OFDM  model uses an IP core or you have built  your model from scratch?

 

i have implemented a simplified OFDM model ( as per the 802.16d standard) with channel coding, and i have not faced such problem !.

 

Can you post   the schematic of your design ? so i can take a look at  your design.

 

Regards,

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Observer james_chan
Observer
4,770 Views
Registered: ‎11-10-2008

Re: Problems with System Generator!!!!

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thank you !!! i want to complete a OFDM tranismiter based 802.11a and i don't know how to  post the picture to the web!!!
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Visitor ecuador
Visitor
3,991 Views
Registered: ‎03-15-2009

Re: Problems with System Generator!!!!

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hello mazene.. i have a question, if you could help me with your design.. i'm making a modem ofdm according to 802.16d but i'm having problems with some blocks. ex fft i cant configure it the right way.. in the modulator side

 

could you upload your file?

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